Science News Magazine:Vol. 170 No. #10
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More Stories from the September 2, 2006 issue
Chimps spread out their tools
Chimpanzees use stones to crack nuts in an African region far from where that behavior was thought to be relegated.
Spiral galaxy in the young universe
Astronomers have identified a galaxy that had already begun to resemble the modern Milky Way when the universe was only 3 billion years old, one-fifth of its current age.By Ron Cowen
Sperm in frozen animals still viable years later
Sperm stored inside frozen organs or whole animals can produce healthy offspring years later.
Drug could be depression buster
Preliminary evidence indicates that a single dose of a drug called ketamine rapidly quells symptoms of major depression for up to 1 week in patients who don't benefit from standard antidepressant medications.
Female moths join pheromone choruses
Female rattlebox moths can detect each other's male-luring pheromones and tend to gather in what may be a scent version of male frogs' chorusing around the pond.
How do female lemurs get so tough?
Female ring-tailed lemurs may get masculinized by well-timed little rises of prenatal hormones.
Is a Galápagos finch caught in a split?
An inland population of one of the famed Galápagos finches may become a new textbook example of the way in which two species emerge from one while still living together.
Flea treatment shows downside of social life
The flealike parasites that build up in a shared burrow take an unexpectedly large toll on the ground squirrel's reproductive success.
Engineering a Cure: Genetically modified cells fight cancer
By inserting a gene into normal immune cells isolated from melanoma patients, scientists have turned the cells into cancer fighters.
Wheel of Life: Bacteria provide horsepower for tiny motor
Crawling bacteria can power a micromotor.By Peter Weiss
Moss Express: Insects and mites tote mosses’ sperm
A lab test has shown that mosses have their own version animal-courier system for sperm that's similar to pollination.
When a Shot Is Not: PCBs may impair vaccine-induced immunity
Exposure to certain pollutants early in life may do lasting harm to the immune system by blocking its response to vaccinations.By Ben Harder
Fossils trapped in amber provide evidence that the Amazonian rainforest dates back 10 to 15 million years.By Eric Jaffe
Health & Medicine
Head to Head: Brain implants are better for Parkinson’s patients
Parkinson's patients who get electrodes surgically implanted in their brains regain some muscle control and have improved quality of life.By Nathan Seppa
Doggone! Pluto gets a planetary demotion
The solar system has only eight planets, and Pluto isn't one of them, according to the first-ever definition of a planet, approved last week by the General Assembly of the International Astronomical Union.By Ron Cowen
Katrina’s Two-Sided Impact: Survey finds disorders, resilience after tragedy
In the year after surviving Hurricane Katrina, Gulf Coast residents experienced a surge in serious mental disorders combined with elements of personal growth and emotional resilience.
As they study the biochemical processes that make Mycobacterium tuberculosis tick, researchers are finding new targets to exploit to combat the microbe.
As scientists discover traits shared by human and ape ancestors millions of years ago, they try to fill in the gaps of human evolution.By Eric Jaffe
Letters from the September 2, 2006, issue of Science News
B line “A Vexing Enigma: New insights confront chronic fatigue syndrome” (SN: 7/1/06, p. 10) implies that there’s not an available cure for chronic fatigue syndrome. I was amazed to find no mention of vitamin B12. I can attest to the remarkable effect. Earl L. PyeOak Hills, Calif. Limited evidence suggests that vitamin B12 absorption […]By Science News